Nike Training Center (NTC) - Mobile Fitness App

For fitness and tennis athletes, I found a very good smartphone app - FREE from Nike Training Center on both Android and iTunes. You can even download add-on free bonus videos from Nike Stars, such as Serena Williams!

Each workout has 10-12 different short workouts, with both video and step-by-step images to follow along.

The app even into your Nike+ account so you can track your Nike Fuel, and it also lets you play any songs or playlists you have on your phone while you workout *Not bad - worth checking out*

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